11 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH996 GT3 Transaxle Oil
Leading reported evidence
Replace different ratios
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed · Original poster
There are lots of internal differences too as the main shaft and individual gears that can be changed for different ratios.
Leading evidence: 'Replace different ratios' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'get the oils every one' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Recommend brands' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
The 996 Cup workshop manual recommends SHC 75W 90 so thats what i use & the road going GT3 has the same gearbox
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that suspect a cause
1
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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suspected cause
Yep totally different unit to Aisin............I now what you mean about the wrong oil I went through that with mine as I said and was unhappy with the price Porsche was asking for the oil ,,,,but after seeing how difficult it was the get the oils every one on rennlist said to get i ended up just going to the dealer ,,,
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
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Suggestion
Do your research an see what works for you ,,,,just stick to the factory recommended brands ..
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
When I did my 997 C2 S transaxle I purchase the recommended factory oil from my local dealer ,I believe it is a shell oil repackaged in Porsche bottles the 997 need 3 liters from memory ..
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
When I did my 997 C2 S transaxle I purchase the recommended factory oil from my local dealer ,I believe it is a shell oil repackaged in Porsche bottles the 997 need 3 liters from memory ..
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
get the oils every one
No successful repair reported for this finding.
0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that suspect a cause
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suspected cause
Yep totally different unit to Aisin............I now what you mean about the wrong oil I went through that with mine as I said and was unhappy with the price Porsche was asking for the oil ,,,,but after seeing how difficult it was the get the oils every one on rennlist said to get i ended up just going to the dealer ,,,
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
11 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Porsche Forum Australia: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T133652Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Anyone on here replaced their 996 GT3 gearbox oil?
The factory replacement fluid (Mobil PTX 75w90) is only available in 20 litre drums which is 16.5 litres too much and costs the equivalent of an arm + a leg. I know there are many 75W90 transmission oils on the market, but some are a lot better quality than others. Over in the US most track hounds use Mobil Delvac which I believe is an America only product.
What's the recommendations from GT3 owners who have replaced their transmission oil?
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There are a lot of threads on this on the Rennlist ,,,,be careful if you buy and alternative brand that has the same 75w90 rating
Many of these threadS will tell you how many alternative brands of oil even with the same viscosity figures do not work well with the Porsche Gearbox ,,many ownerS complained of poor shifting issues and were generally unhappy ..
When I did my 997 C2 S transaxle I purchase the recommended factory oil from my local dealer ,I believe it is a shell oil repackaged in Porsche bottles the 997 need 3 liters from memory ..
I was going to import the Mobil PTX from Suncoast porsche in the U.S as it was cheaper than the Factory OEM oil at my local dealer .
In the end I just opted to bit the bullet and pay the steeler price to avoid any potential Dramas ,I now the Dealer is ripping me off blindly as the OEM oil was priced ridiculously ,,but it was piece of mind as gearbox works perfectly ..
Do your research an see what works for you ,,,,just stick to the factory recommended brands ..
Stephen,
While not specifically answering your question, you may find this interesting as it discusses viable alternatives to PTX:
http://forums.pelicanparts.com/porsche-911-technical-forum/1008772-g-50-trans-fluid.html
I buy direct from east coast lubes in 20lt drum & use SHC 75W 90 in the 996 cup car & 996 C2
http://www.eclubes.com.au/products/browse/6/automotive-and-commercial-vehicles/gear-oils
Price from Porsche was about $900 & from East coast was about $380 delivered i think
I don't believe so. The GT3 gearbox (Type G96.96 in my case made by Getrag in Germany) and is also used in the GT2 / TT and Cup / RSR Cars. It has a dedicated oil pump & external oil / water intercooler with a LSD. There are lots of internal differences too as the main shaft and individual gears that can be changed for different ratios.
So you can see that the last thing I want is to choose the wrong lubricant as an overhaul of the transaxle will cost a fair amount of money.....
Yep totally different unit to Aisin............I now what you mean about the wrong oil I went through that with mine as I said and was unhappy with the price Porsche was asking for the oil ,,,,but after seeing how difficult it was the get the oils every one on rennlist said to get i ended up just going to the dealer ,,,
Just didn,t want to take the risk as I had read many horror stories about shifting problems and noisey gearboxs due to inferior products being used ..
Try ringing a place like Auto Haus..PR Tec or Auto werks eg a dedicated local Porsche specialist and get their advice ..I now Auto haus and PR Tec do a lot of track prep for GT3 owners who compete at club level motorsport as I see them at State sprint rounds every meeting ..
Its pretty simple just use whats recommended like PTX, SHC or Delvac all in 75W 90
The 996 Cup workshop manual recommends SHC 75W 90 so thats what i use & the road going GT3 has the same gearbox
Thanks guys - I'm going to do some more digging to see what is on the market without buying a 20 litre drum.
I worked for Esso Mobil for many years so I'll see if I can speak to someone and find some 2019 equivalent lubes that can be bought off the shelf here in Oz.
Stephen,
Love your due diligence but think you are making heavy weather of this.
https://www.ebay.com.au/itm/Motul-Gear-300-75W90-Gear-Differential-Oil-1L/163375853874?epid=244529921&hash=item2609f5b132:g:tvoAAOSwvhxb7dIx
My shop puts Delvac in my cup car, many on rennlist seem to use the same. Shifts are nice and smooth. I didn’t know the box was made by Getrag...you learn something new every day.
This is a source reference. Confirm exact model applicability in the original material.
